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Question
Refer to the scenario below, and then answer the following question(s).
A friend of yours finds a plastic bag containing what appear to be similar seeds collected last year during a vacation hiking trip. Your friend isn't quite sure which plant he collected them from. You open the seed with a sharp knife, examine the inside, and ask him if it was a non-woody plant with narrow leaves. Now recalling the plant, and astonished by your "detective work," he says, "Yes! How did you know?" Your friend then presents several pressed flowers and states that one of the flowers was from the plant from which he collected the seeds, but he isn't exactly sure which one. You examine the petals and sepals of each flower. The first flower has six parts, the second has five parts, and the third has eight parts.
Which flower would you select as the one matching the plant from which he gathered the seeds?
A) The flower with six parts
B) The flower with five parts
C) The flower with eight parts
D) Either the flower with five or the flower with eight parts could match the seeds.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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A) from fertilization to three weeks
B) from fertilization to eight weeks
C) the first trimester only
D) the third trimester only
E) from nine weeks until birth
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Which of the following statements concerning sperm and fertilization is correct?
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C) The first capacitated sperm fertilizes the egg.
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A man has been experiencing reduced urine flow problems. After examination by his doctor, the diagnosis is an enlarged prostate gland. What is the connection between prostate enlargement and reduced urine flow?
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Sperm development takes about:
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C) 6 months.
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The sequence of development of sperm is:
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The vas deferens ducts empty sperm into the:
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Which structure would be best described as helping to prepare the female tract for pregnancy and maintain it during the early phases of pregnancy?
A) vagina
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On average, about how often does ovulation occur?
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C) every 14 days
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Through what structure does an oocyte travel on its way to the uterus?
A) uterine tube
B) cervix
C) vagina
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If you could stop diffusion of substances in fruit fly zygotes, could you stop normal development? Why or why not?
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Programmed cell death is also known as ________.
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You are a substitute teacher in a high school biology lab class on the day the students are dissecting frogs. A particularly bright student happens to notice that the left adrenal gland is malformed in her frog. She asks if a problem in embryonic development could have caused that. Although there may be more than one reason, what might you propose as an explanation based on embryonic development?
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Different cell layers may have different cell adhesion molecules.
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Cells become more and more specialized as development progresses.
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Eye cells can become beak cells once they are committed.
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Bicoid is only one type of morphogen.
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Cleavage and gastrulation take place in animals such as humans and birds but not in frogs.
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The blastula is the stage of embryonic development in which cells migrate.
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The end of a zygote that contains less yolk is the animal pole.
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ZPA cells of the chick embryo produce which morphogen?
A) sonic hedgehog
B) sonic chicken
C) bicoid
D) chicken wing factor
Q:
Which of the following is a process by which an initial set of genes turns on a second set of regulatory genes, which eventually turns on a third set of genes?
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B) gastrulation
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D) the genetic cascade
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What is the effect of higher concentration of bicoid protein in part of a fruit fly embryo?
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B) It will develop into the heart of the organism.
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Of the choices listed, the first event that occurs during embryonic development is:
A) germ layer formation.
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Which characteristic is typical of the vegetal pole of an embryo?
A) The vegetal pole is composed of a single, large cell.
B) The vegetal pole is always hollow.
C) The vegetal pole contains relatively less yolk.
D) The vegetal pole has a relatively greater proportion of yolk.
E) The vegetal pole is the site of the development of the mouth.
Q:
The phase during which embryonic cells arrange themselves into three layers is called:
A) cleavage.
B) gastrulation.
C) organogenesis.
D) fertilization.
E) induction.